23. — (1) A person who obstructs or impedes a litter warden or a member of the Garda Síochána who is exercising functions under this Act shall be guilty of an offence.

(2) A litter warden or a member of the Garda Síochána who—

(a) has reasonable grounds for believing that a person is committing or has committed an offence under this Act, may request the person to give his or her name and address, and may request that the information given be verified, and

(b) is dissatisfied with the verification provided pursuant to a request under paragraph (a), may request that the person accompany the warden or member to a local authority office or Garda station for the purpose of the verification.

(3) A person who—

(a) fails to give his or her name and address when requested to do so under subsection (2)(a) or gives a name or address that is false or misleading, or

(b) fails to comply with a request made by a warden or member under subsection (2)(b),

shall be guilty of an offence.

(4) Where a litter warden makes a request of a person under this section, the litter warden shall, where the person requires proof of the litter warden's authority, produce to the person a certificate or other evidence of such authority.

(5) A litter warden who believes that the assistance of a member of the Garda Síochána is required in any particular instance to prevent the obstruction of the litter warden in exercising the litter warden's functions under this Act may request such member to assist to prevent the obstruction and the member shall comply with the request.

(6) A member of the Garda Síochána who is of the opinion that a person is committing or has committed an offence under this section may arrest the person without warrant.